12 13 511 Replacing ignition coil (M52, M52TU, S52, S50US, M54)

Switch off ignition.

Remove cover for ignition coils. 11 12 000 REMOVING AND INSTALLING, SEALING CYLINDER HEAD COVER (M52TU / M54 / M56)

Version with single-spark ignition coils: 

Unlock connector of ignition coils.

Disconnect connector from ignition coils.

Fig 1: Disconnecting Connector From Ignition Coils

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Unfasten screws on ignition coil.

Pull out ignition coil.

Installation: 

Screw down grounding strap (1) to cylinder head cover mounting and to ignition coil for cylinders 1 and 6.

On metal covers:

Screw down grounding strap of cable duct to cylinder head cover mounting between cylinders 2 and 3.

Fig 2: Unfastening Screws On Ignition Coil

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Installation: 

M52 plastic cover:

Screw down grounding strap (1) of cable duct with connecting plate (2) of ignition coils.

Fig 3: Identifying Grounding Strap Of Cable Duct With Connecting Plate Of Ignition Coils

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Installation: 

Plastic cover M52TU, M54:

Screw down grounding strap (1) of connecting plate of ignition coils with retaining pin of ignition coil of cylinder 1.

Screw down grounding strap (2) of cable duct with connecting plate of ignition coils between cylinders 2 and 3.

Fig 4: Identifying Grounding Strap Of Connecting Plate Of Ignition Coils With Retaining Pin Of Ignition Coil

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Version with rod-type ignition coils: 

Unlock plug retainer of ignition coil (1) and disconnect plug.

Pull ignition coil (1) up and out.

Fig 5: Unlocking Plug Retainer Of Ignition Coil

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Installation: 

Check that rubber seal of ignition coil (1) is correctly seated.

Fig 6: Checking Rubber Seal Of Ignition Coil

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